    [--x2--]
    ...]
 
-  y is a vector
+  y is a core.matrix vector
 
-  Return a vector of [distance-from-x1 distance-from-x2 ...]."
+  Return a sequence of [distance-from-x1 distance-from-x2 ...]."
   [X y]
   (map (partial m/distance y) X))
 

   [--x2--]
   ...]

  y is a vector

  Return a vector of [distance-from-x1 distance-from-x2 ...]."
  [X y]
  (m/div
    (m/sub 1 (m/mmul X y))

   [--x2--]
   ...]

  y is a core.matrix vector

  Options
    :k (default 3)
